Yanmar 3YM30, Руководство по обслуживанию

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4. Disassembly and reassembly
96R1
(19) Mounting the marine gearbox
1) Mount the damper disk to the flywheel.
Align the damper disk with the input shaft spline
and insert.
2) Mount the marine gearbox to the flywheel housing.
(20) Mounting the cylinder head
1) Put the cylinder head gasket on the cylinder block,
aligning it with the cylinder block positioning pins.
2) Lift the cylinder head horizontally and mount it
aligning with the cylinder head gasket.
3) Coat the flange part and thread of the cylinder
head bolt with engine oil, and lightly tighten the
bolts in the specified order first. Then tighten
completely, in the same order.
(21) Mounting the rocker arm shaft assembly
and pushrods
1) Fit the pushrod to the tappet.
2) Coat the top of the pushrod and the adjusting
screw of the rocker arm with engine oil. (Apply lube
oil to the screw and lock nut.)
Mount the rocker arm shaft assembly to the
cylinder head and tighten the bolts.
3) Adjust valve clearance
4) Coat the rocker arm and valve spring with engine oil and mount the rocker arm cover.
Tightening torque N•m (kgf•m)
1st step
Final
Cylinder head
bolt 24-32
(2.5-3.3)
53.9-57.9
(5.5-5.9)
mm
Intake/exhaust valve clearance 0.15-0.25
Damper disk
Flywheel
10
13
14
1
2
3
5 4
6
8
11
9
7
12
Assembly
Camshaft side
Fuel pump side
Flywheel side
Gear case side
Head bolt tightening order
3 cylinder head
( )
006757-00E
Head bolt tightening order
2 cylinder head
( )
006758-00E
6
7
8
1
2
4
9
5
3
10
Assembly
Camshaft side
Fuel pump side
Flywheel side
Gear case side
Valve
clearance
Rocker arm Adjusting screw
Lock nut
Engine oil